Green Forest Quartzite is a highly expressive natural quartzite quarried in Brazil, distinguished by an exceptionally rich deep moss-green to sage-green background crossed by powerful golden-yellow, ochre and rust-brown streaks. The dramatic veining resembles active lightning bolts, creating strong directional movement across the slab. In some blocks, the stone exhibits significant structural depth, with fine crystalline boundaries visible beneath the dominant gold-veined surface layers.
General Characteristics
- Base Color: Deep moss green to sage green
- Secondary Colors: Golden yellow, ochre, rust brown
- Veining: Strong, jagged, irregular and directional
- Pattern: Dramatic lightning-bolt movement
- Texture: Crystalline, compact and granular
- Structure: Dense metamorphic structure with visible crystalline boundaries
- Appearance: Luxurious, dramatic and highly decorative
- Variation: Medium to high, depending on quarry block
- Recommended Finish: Polished, honed, leathered and other specialty finishes
Texture
Green Forest Quartzite has a dense crystalline texture created by the metamorphic recrystallization of quartz-rich rock. Fine interlocking crystals provide the stone with its characteristic hardness and durability. Some slabs can display subtle crystalline boundaries beneath the dominant green and golden surface pattern, creating a sense of three-dimensional depth. Under a polished finish, these crystalline structures can reflect light and enhance the richness of the green background.
Pattern & Veining
The stone's defining characteristic is its dramatic color contrast. Deep moss and sage green form the dominant background. Golden-yellow and ochre streaks create the primary movement. Rust-brown accents add warmth and additional depth. Veins can be jagged, branching and highly directional. Some sections resemble lightning bolts crossing the slab. Veining intensity and direction can vary substantially between blocks. Large slabs can be particularly effective for bookmatching, where the directional veins create symmetrical or mirrored compositions.
Indicative Physical & Mechanical Properties
The following values are indicative ranges for Brazilian quartzite and should not be considered certified test results for every Green Forest Quartzite block.
- Apparent Density: 2,700–2,750 kg/m³
- Water Absorption: 0.15–0.40% by weight
- Open Porosity: 0.1–1.0%
- Compressive Strength: 180–220 MPa
- Flexural Strength: 15–22 MPa
- Abrasion Resistance: Approx. 10–25 cm³/50 cm²
- Mohs Hardness: Approx. 6.5–7
- Freeze-Thaw Resistance: Generally good; project-specific testing recommended
Note: Actual test results can vary according to quarry location, geological formation and individual block. For commercial or architectural projects, request the supplier's current laboratory test certificate for the exact material.
Mineral Composition
Green Forest Quartzite is predominantly composed of quartz with varying amounts of feldspar, mica and other accessory minerals. Indicative mineral composition: Mineral Approx. % by Weight
- Quartz: 70–90%
- Feldspar: 3–15%
- Mica: 2–10%
- Amphibole / Pyroxene: 0–5%
- Iron-bearing minerals: 0.5–5%
- Other accessory minerals: <3%
The green coloration may be associated with chlorite, amphibole, epidote or other green-bearing metamorphic minerals, while the golden-yellow, ochre and rust tones can be related to iron-bearing minerals and alteration zones.
Chemical Composition
Indicative chemical composition: Chemical Component, Approx. % by Weight
- SiO₂: 70–90%
- Al₂O₃: 3–12%
- Fe₂O₃ / FeO: 0.5–6%
- CaO: 0.2–4%
- MgO: 0.2–5%
- K₂O + Na₂O: 1–6%
- Other oxides: <3%
The actual chemistry may vary considerably because Green Forest Quartzite can contain different proportions of quartz, feldspar, mica and green metamorphic minerals.
Recommended Applications
Green Forest Quartzite is particularly suitable for luxury residential, hospitality and commercial projects, including:
Kitchen countertops, Kitchen islands, Bathroom vanity tops, Feature walls, Interior wall cladding, Luxury flooring, Fireplace surrounds, Reception desks, Hotel and restaurant interiors, Tabletops, Coffee tables, Furniture, Staircases and steps, Decorative panels, Columns, Waterjet designs, Bookmatched feature walls, High-end architectural installations.
Its high hardness and relatively low water absorption make it particularly attractive for countertops and other high-use interior surfaces.
Exterior applications may be possible depending on the specific material, finish and climate, but project-specific testing is recommended.
Maintenance
Green Forest Quartzite is a relatively hard and durable natural stone, but proper maintenance is still recommended.
- Apply a high-quality penetrating stone sealer after installation.
- Use a pH-neutral stone cleaner for routine cleaning.
- Avoid strong acids and highly alkaline cleaning chemicals.
- Clean spills promptly, particularly oils, coffee, wine and strongly colored liquids.
- Use cutting boards and trivets on kitchen countertops.
- Avoid abrasive powders and aggressive scouring pads.
- Periodically inspect the sealer and reseal when necessary.
- For polished surfaces, use non-abrasive cleaning products to maintain the gloss.
- For exterior applications, follow a maintenance program appropriate to the local climate.
Brazil
14YR
China
India
